For me, it would probably have to be the Tyrant in Resident Evil:Code Veronica X, the one you fight in the plane. Not only are the controls as ergonomic as a bed made out of broken glass and salt, they give you like no room to fight it. I almost threw my controller at my screen. As it was, I turned off the game.

Enough about me, what's your cheapest boss fight?

And if this is already a topic, then I'm sorry. There, I apologized in advance. PLease don't reply just to tell me this is already a topic.

EDIT----------------------------------------------------
Wow. I didn't expect this to be so popular. I hoped, but you guys exceeded all expectations. You guys (and girls, don't flame me) are great. Thank you for being so awesome!

Cheapest as in pointless or cheapest as in stupidly unfair and annoying?

Friggin Kahn in MK3...cheap bastard!

The end boss from Neverwinter Nights 2. If I have to halt an epic battle to go and look up a "How to Kill" faq on the net, then we've got a problem.

Nexus Zef:
Cheapest as in pointless or cheapest as in stupidly unfair and annoying?

Sorry, I forgot to say. Cheapest as in stupidly unfair and annoying. Thanks for bringing that up.

As much as I love Bioshock I have to say the Big Daddy's are pretty cheap. I don't understand how they make you go into slow motion by doing nothing.

Jinpachi from Tekken 5,
Necron from FF9,
Perseus from God of War 2,
Belias from Final Fantasy tactics, (pretty much every boss in that game really)
Al Bhed Psyches in Bitzball.

Spirit Doku from Ninja Gaiden, so he blocks most of my attacks and he can use an unblockable move that regenerates half of his health bar while taking away more than half of mine. No thanks, I was cheering when I finally killed him for good.

In terms of unfairness, I think it would be Seth from Street Fighter IV.
I never played a Street Fighter before and I thought I give the "easy" mode a chance. Everything worked fine till the endboss fight. He is ridiciously hard to beat there is no easy mode while fighting the boss, so why bother adding modes after all.

In terms of easy, I would go with the pope from Grandia 2. 1 vs. 3 easy as hell. 1 was attacking normally, 1 was attacking heavy so he could not perform action, 1 was using magic/heals.

girl_in_background:
For me, it would probably have to be the Tyrant in Resident Evil:Code Veronica X, the one you fight in the plane. Not only are the controls as ergonomic as a bed made out of broken glass and salt, they give you like no room to fight it. I almost threw my controller at my screen. As it was, I turned off the game.

Enough about me, what's your cheapest boss fight?

And if this is already a topic, then I'm sorry. There, I apologized in advance. PLease don't reply just to tell me this is already a topic.

Tabuu on Insane. Man that was tough.

kannibus:
The end boss from Neverwinter Nights 2. If I have to halt an epic battle to go and look up a "How to Kill" faq on the net, then we've got a problem.

Yeah, I have to agree with you there.
I would call that a king sized dick move of an example of Guide, Dang It

canadamus_prime:

kannibus:
The end boss from Neverwinter Nights 2. If I have to halt an epic battle to go and look up a "How to Kill" faq on the net, then we've got a problem.

Yeah, I have to agree with you there.
I would call that a king sized dick move of an example of Guide, Dang It

Sigh, another few hours im going to pump into tvtropes.

Mirror's Edge - The Assassin.

Don't punch her! Because punching her means she can COUNTERATTACK! But there's some inexplicable times midfight where you CAN punch her which you know because...well I don't know. And also don't try to duck her kicks because that doesn't even make sense. And don't do flying kicks that force your entire body weight towards her chest because she'll BLOCK THEM.

Gee, this PARKOUR GAME sure is great, isn't it?

Azazel, Tekken 6. I HATE HIM SO MUCH ARGHHHHHHHHHHHHHHH :(

Spaceman_Spiff:
Jinpachi from Tekken 5

My god yes.

Also, most of the bosses in Odin Sphere.
if just being really annoying then i'd say the final boss of MadWorld, he was far too easy

I'd say anyone in Dynasty Warriors. They're easy as fuck, but they always have five times your Life. I say it's cheap because I think Koei should focus fix up the A.I instead of making them only stronger.

Beating them doesn't feel awesome either. I'm never given the feeling - 'Wow, I had an epic fight with Lu Bu' but more of the 'For fuck sakes, these guys are so god damn easy to kill but they take forever.'

Strider in Half-Life 2.

Anything capable of picking you up in Dragon Age: Origins. I still have the use of both of my arms, so why can't I stab the big ogre's wrist to get him to let go?

Spaceman_Spiff:

Al Bhed Psyches in Bitzball.

OH MY GAAAAAWWWWWD!!!!! Me and my friend just spazzed out... God, those guys were, like, impossible. I just didn't even try.

The ATAC in Killzone 2.

1 small pillar in the middle of the area for cover, while the ATAC is a fast flying attack drone that flies around the area really, really fast constantly shooting miniguns and rockets at you.

Fuck you ATAC.

Branka and her Golems in Dragon Age Origins.

This one is kind of my fault, because I went in with no mage, and few healing items... but when I can't even get her to half health on easy, yeah, fuck you Branka.

All my autosaves were right before I faught her, so I could't reload.

I had to use one of my manual saves that was right before I had to fight the Broodmother. So I had to fight that thing and go through the gauntlet all over again just so I could get Wynne in my party and finally beat that bitch.

No boss will ever be as cheap, frustrating, and annoying as DoA4's boss.

i would say seth but he's so cheap it would be cheap to say seth

Malicious:
The new prince of persia, every single boss is cheap and if you fail quicktime events you dont die but the boss endlessly regains health -_-

This except i hated the alchemist the most out of all of them.

the gorgon in God of War 2.
But the decapitation after you beat her is definitely worth the struggle.

on a tangent, the cheapest boss I ever played was probably the end boss of StarFox Adventures since I paid $4-5 for that game and beat it over a weekend, :P (was an ok game)

Dullahan from Golden Sun 2

The douche had 3 insta-kill moves and could take out my whole party in one turn.

I'd have to say Irving from Resident Evil 5 on professional. Or whatever the highest difficulty is.

Elder Wyrm from FFXII. Sporefall, anyone? *ugh*

Cheap as in really hard in a way that does not let you fight back - Tekken 6 and DOA 4(you know the thing you fight at the end of both games)

Cheap as in $$$ cheap - Fallout 3 OA boss and probably some other game... I convinced the boss to kill himself... saved me some bullets and I think in the other game I paid someone like $20 to kill himself

Cheapas in really easy - Spiderman vs Mysterio in... one of the spiderman games, its the one where he has like 3 healthbars, but you punch him in the face and he dies... WTF guess fish bowls are not good protection. Who would have thought?

Jinpachi Mishisma! instant stun attack, and super fast and super range super attack!

Devil May Cry 3, Heaven or Hell mode - Every boss in the damn game.